78602801 has 2 divisors, whose sum is σ = 78602802. Its totient is φ = 78602800.

The previous prime is 78602759. The next prime is 78602807. The reversal of 78602801 is 10820687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 27050401 = 7180^2 + 5201^2 .

It is a cyclic number.

It is not a de Polignac number, because 78602801 - 2¹⁸ = 78340657 is a prime.

It is not a weakly prime, because it can be changed into another prime (78602807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39301400 + 39301401.

It is an arithmetic number, because the mean of its divisors is an integer number (39301401).

Almost surely, 2^78602801 is an apocalyptic number.

It is an amenable number.

78602801 is a deficient number, since it is larger than the sum of its proper divisors (1).

78602801 is an equidigital number, since it uses as much as digits as its factorization.

78602801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 78602801 is about 8865.8220713028. The cubic root of 78602801 is about 428.3637127977.

The spelling of 78602801 in words is "seventy-eight million, six hundred two thousand, eight hundred one".